William claek



(No Model.) 2 Sheets-Sheet 1. W. CLARK. Stove. No. 241,300. Patented May10, 1881.

N. PETERVPhatoLthogl-apher, Washington. D. C.

W. CLARK.,

Stove 2 Sheets-Sheet, 2.

(No Model.)

No. 241,300. Patented May 10,` 1881.

'INVENTUM ATTORNEYS.

N. PETERS, Photo-Llhugrapher, Washington. D, G.

UNITED STATES PATENT OFFICE.

WILLIAM CLARK, OF TROY, NEW YORK.

STOVE.

SPECIFICATION forming part of Letters Patent N0. 241,300, dated May 10,1881.

Application filed January 27, 1881.

To all lwhom 'it may concern Be it known that I, VILLIAM CLARK, ofr1`roy, in the county of Rensselaer and State of New York, have inventeda new and useful Improvement in Stoves, of which the following is aspecification.

Figure 1, Sheet 1, is a perspective view of my improvement. Fig. 2,Sheet 1, is a crosssectional elevation of the same, taken through thefire-box. Fig. 3, Sheet 2, is aplan view of the same, partly inhorizontal section through the tire-box. Fig. 4, Sheet 2, is a centralvertical longitudinal section of Fig. 3.

Similar letters of reference indicate cerrosponding parts.

The object of this invention is to improve the construction of thestoves for which Letters Patent No. 122,156 were issued to me December26, 1871, to adapt it for burning bituminous coal, and to allow theashes to be lnore eftectually shaken out of the fire-box, as will behereinafter fully described.

The invention consists in constructing' the tire-box with offsets in theupper parts of its sides, and the casewith openings provided withdampers in the upper parts of its sides, whereby air can be admitted tothe ugperpart ofthe f1re-box, to adapt the stove to burn bi tuininouscoal.

A is the bottom or hearth plate of the stove. A is the ash-pit. B is theouter ease of the fire-chamber. C is the top plate. D is thecoal-reservoir. E is the smoke-pipe collar. F is the upper oven, and GiYis the lower oven.

The upper part of the outer ease,B,is made with a bulgel to form asmoke-flue, I, between the said case and the fire-box H, The smoke andother products of combustion pass back along the sides of the stove,enter a flue, I', formed by due-plate O at the rear side of the re-box,pass back into ue mf, between the two ovens F Gr, pass up at the rearside of the upper oven, F, and pass along the top of the said oven F tothe smoke-collar E. I

In the front of the ease B are formed openings J, leading into theforward part of the flue I and closed by a damper, K, to admit air intothe said flue I for regulating the draft.

In the upper part of the sides of the re-box H are formed offsets L,each of a length about equal to one-quarter of the circumference of thesaid fire-box, and extending outward to the case B.

(No model.)

In the sides of the case B, directly opposite the offsets L, are formedopenings M, to admit air directly to the upper part of the fire-box H,and thus adapt the stove for burning bituminous coal. r1`he openings Mare provided with dampers N, sliding along the inner surface of the caseB, so that the admission of air can be regulated as desired, and so thatthe openings M can be closed, to adapt the stove for burning` anthracitecoal.

The {ire-box His supported by the flaring rin g-plate R, the lower edgeof which rests upon a shoulder, S, formed upon the inner surface of thecase B, and the upper edge of which tits into the angle between the bodyot' the firebox H and its offsets L. rIhe ring-plate R forms the innerwall of the lower part of the flue I.

The hind of grate used in this stove will depend upon the fuel to beburned therein. If bituminous coal be used, I preferl to employ a grateespecially adapted to that kind of fuel, consisting of two parts-astationary and a movable partthe movable or vibrating part provided withpivot S and lever-socket 13, and having projections ou its uppersurface,so that when the grate is shaken by the leverV p the partially-meltedclinkers may be broken by the projections or teeth on the upper side orl surface of the vibrating part of the grate. The grate will besupported on a cross-bar having arms 10, working on lugs l2, in theusual and well-known manner.

I am aware that grates substantially similar to the one described havebeen heretofore used, and I therefore do not claim such grate as myinvention; but

In a stove, the combination of the fire-box H, having ott'sets L in theupper parts of its sides, and the case B, having openings M, providedwith dampers N, in the upper parts of itsl sides, substantially asherein shown and described, whereby air can be admitted directly to theupper part of the said fire-box, to adapt the stoveto burn bituminouscoal, as set forth.

M. CLARK.

Witnesses:

DAVID M. RANKIN, JOHN CoNsALUs.

